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From "Jason Lowe (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7533) Datanode sometimes does not shutdown on receiving upgrade shutdown command
Date Mon, 12 Jan 2015 21:34:36 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7533?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14274206#comment-14274206
] 

Jason Lowe commented on HDFS-7533:
----------------------------------

The "-1 overall" is unrelated, see HADOOP-11473.

> Datanode sometimes does not shutdown on receiving upgrade shutdown command
> --------------------------------------------------------------------------
>
>                 Key: HDFS-7533
>                 URL: https://issues.apache.org/jira/browse/HDFS-7533
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Kihwal Lee
>            Assignee: Eric Payne
>         Attachments: HDFS-7533.v1.txt
>
>
> When datanode is told to shutdown via the dfsadmin command during rolling upgrade, it
may not shutdown.  This is because not all writers have responder running, but sendOOB() tries
anyway. This causes NPE and the shutdown thread dies, halting the shutdown after only shutting
down DataXceiverServer. 



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